Abstract: The invention relates to a method for producing steam by means of solar energy, whereby water is brought into a field of tubes comprising a number of approximately horizontal metal tubes (2) and concentrators (3) of solar radiation directed onto these tubes (2), whereby in a heating part (14) of this field of tubes (1), water is heated, this water, in a saturation part (15) of the field of tubes (1) having a number of parallel tubes (2) connecting to the heating part (14), is transformed into saturated steam and, in a superheating part (16) of the field of tubes (1), the saturated steam is superheated. In the aforementioned parallel tubes (2) of the saturation part (15), an amount of steam is supplied with such a speed that the water flows in these tubes (2) in a tubular shape against the interior wall.

Abstract: Device for heating with solar energy, which device contains at least one mirror construction (1) which is mounted on a frame (3) in a movable manner and which be directed towards the sun, and at least one collector (4) extending parallel to the mirror construction (1) in order to collect the solar radiation reflected by the mirror construction (1), characterized in that the mirror construction (1) contains a number of almost flat mirror strips (2) extending next to one another in the longitudinal direction of the collector (4) and which are each provided on the frame (3) such that they can rotate around their longitudinal direction, whereas the collector (4) is stationary in relation to the frame (3), whereby the mirror strips (2) are situated in an almost horizontal plane with their axes of rotation, whereby the device contains means (16) to rotate the mirror strips (2) and the mirroring surface of the mirror strips (2) such that the solar rays coming in on said surface can be reflected towards the collector